ML20151X097

Forwards Comments by Environ Science Svc Admin on PSAR Per 670725,0818,11 & 17 Requests

ML20151X097
Person / Time
Site:	Diablo Canyon, Zion, 05000000
Issue date:	09/01/1967
From:	Shaw M NRC
To:	Morris P NRC
Shared Package
ML20151W779	List: ML20151W777 ML20151W807 ML20151W834 ML20151W945 ML20151W976 ML20151X022 ML20151X037 ML20151X057 ML20151X067 ML20151X076 ML20151X087 ML20151X097 ML20151X119 ML20151X125 ML20151X306 ML20151X322 ML20151X358 ML20151X381 ML20151X405 ML20151X436 ML20151X461 ML20151X466 ML20151X585 ML20151X612 ML20151X719 ML20151X755 ML20151X798 ML20151X821 ML20151X882
References
FOIA-88-156 NUDOCS 8808250221
Download: ML20151X097 (2)

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UNITED STATES GOi ERNMENT

. Memorandum To  : Peter A. FJorris, Director DATE:

Division of Reactor Licensing SEP1 Go7 FRoM : Hilte i Shaw D'i SIEo'i ' 7 Division of Roacter Development & Technology

SUBJECT:

SAFETY ANALYSIS REPORTS RDTtNStS258 Reference is made to the letters of July 25, 1967 and August 18, 1967, August 11, 1967, and August 17, 1967, frora the Division of Reactor Licensing, to the Environmental Science Services Ad. ministration requesting cor:rnents on the following safety analysis reports respectivelyt Zion Station Units 1 and 2 Co =onwealth Edison Company Preliminary Safety Analysis Report Volumes I and II dated July 12, 1967 and Amendment No. I dated August 15, 1967 Diablo Canyon Site Pacific Gas and Electric Company Preliminary Safety Analysis Report Third Supplement dated July 31, 1967 Easton Nuclear Station Niagara Mohawk Power Corporation Preliminary Safety Analysis Report Volume I, dated August 1, 1967 Review by the Environmental Meteorology Branch, Air Resources Laboratory, ESSA, has now been completed and their coments are attached.

Attach.entat Three Sets of Comments (Orig. 6 1 cy.)

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Comment s on Diablo Canyon Site I' . i.

^I Pacific Gas and Electric Company Preliminary Safety Analysis Report . , , , , , , . . , ,

Third Supplement dated July 31, 1967 -

i.i.......... . . .:I Prepared by Environmental Meteorology Branch Institute for Atmospheric Sciences Environmental Science Services Administration August 28, 1967 In regard to question VII.G.5, it is obvious f rom the comparison made by the applicant that there is very little dif ference beyond the first 300 meters between using a virtual point source or a volumetric source technique to account for added building-induced diffusion. It should be pointed out that both techniques are an empirical means to account for a phenomena which is not clearly understood but which i s observed. For comparative purposes it is interesting to note the ratio between con:entrations without accounting for building turbulence and the volumetric approach. The table below shows the Diablo Canyon calculations compared to recent field tests at the National Reactor Testing Station conducted under inversion conditions and moderate wind speeds (u = 6.3 m/ sec).

,Di st ance (meters) Diablo Canvon EBR-II Tests 100 3.5 200 4.2 300 9.6 400 6.2 3.9 6?0 3.2 700 3.2 800 2.8 1000 2.3 Extrapolating the results, one would conclude that an added dilution fa: tor of 2.8 is reasonable at the site boundary of 800 m.

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